The first error-free data transmission beyond 1 km of multi-mode fiber at bit-rates exceeding 20 Gb/s is demonstrated using a high modulation bandwidth, quasi-single mode (SMSR~20 dB) 850 nm VCSEL. A VCSEL with small ~3 μm aperture shows quasi-single mode operation with a narrow spectral width. The top mirror reflectivity of the VCSEL is optimized for high speed and high output power by shallow etching. A combination of narrow spectral width and high optical power reduces the effects of fiber dispersion and fiber and connector losses and enables such a long transmission distance at high bit-rates.

Date Published: 13 March 2013
PDF: 7 pages
Proc. SPIE 8639, Vertical-Cavity Surface-Emitting Lasers XVII, 86390T (13 March 2013); doi: 10.1117/12.2003693

Published in SPIE Proceedings Vol. 8639:
Vertical-Cavity Surface-Emitting Lasers XVII
Kent D. Choquette; James K. Guenter, Editor(s)